EP3813147B1 - Module de batterie, bloc-batterie et appareil utilisant un élément de batterie - Google Patents

Module de batterie, bloc-batterie et appareil utilisant un élément de batterie Download PDF

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Publication number
EP3813147B1
EP3813147B1 EP20811954.5A EP20811954A EP3813147B1 EP 3813147 B1 EP3813147 B1 EP 3813147B1 EP 20811954 A EP20811954 A EP 20811954A EP 3813147 B1 EP3813147 B1 EP 3813147B1
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EP
European Patent Office
Prior art keywords
plate
end sub
battery module
battery
management unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20811954.5A
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German (de)
English (en)
Other versions
EP3813147A1 (fr
EP3813147A4 (fr
Inventor
Aifang HUANG
Rongzhao PAN
Hanqing GAO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Publication date
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Publication of EP3813147A1 publication Critical patent/EP3813147A1/fr
Publication of EP3813147A4 publication Critical patent/EP3813147A4/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • This application relates to the field of energy storage devices, and in particular, to a battery module. In addition, this application further relates to a battery pack and an apparatus using a battery cell.
  • a module end plate acts as the most important bearing structure of the battery module, and an optimized structure of the module end plate directly affects the energy density and structural strength.
  • end plates aluminum alloy and stainless steel-plastic composite.
  • deformation of the end plates cannot be prevented under an expansion force of battery cells, and when a cell management unit is disposed on an outer surface of the end plate, the cell management unit is prone to a failure under the effect of the force.
  • the invention is defined by the battery module according to claim 1.
  • This application provides a battery module as specified in any of claims 1-10, so as to avoid a failure of a cell management unit caused by deformation of an end plate and improve the life of the battery module.
  • This application further provides a battery pack as specified in claim 11 or 12.
  • This application further provides an apparatus as specified in claim 13.
  • This application provides a battery module, including:
  • the first end sub-plate includes a metal plate and an insulation fastener
  • a first slot is provided in one of the cell management unit and the first body, and a second buckle is disposed on the other; and a protrusion is disposed in the first slot, and the protrusion is fitted to the second buckle; and/or a first buckle is disposed in one of the cell management unit and the first body, and a second slot is provided on the other; and the first buckle is fitted to the second slot.
  • the first end sub-plate further includes an extension
  • the first end sub-plate further includes a limiting plate; and the limiting plate is connected to a side of the first body facing towards the cell management unit, so as to limit displacement of the cell management unit along a width direction of the battery module.
  • the end plate further includes a third end sub-plate; and the third end sub-plate is connected to a side of the second end sub-plate facing away from the first end sub-plate.
  • the third end sub-plate is generally a flat plate structure, and a groove structure for adhesive or cushion is provided on a surface of the third end sub-plate.
  • first connection members are disposed on both sides of the metal plate along the width direction of the battery module;
  • a sleeve is further included, and a center line of the sleeve extends along a height direction of the battery module; and the first connection member, the second connection member, and the third connection member are all connected to an outer wall of the sleeve.
  • the insulation fastener includes a first lifting member, and the first lifting member is disposed at the top of the first body along a height direction of the battery module;
  • a reinforcing rib is formed on one or both sides of the second end sub-plate along the length direction of the battery module.
  • This application further provides a battery pack, and the battery pack includes a case and the foregoing battery module disposed in the case.
  • the case has an accommodating cavity, the accommodating cavity accommodates one battery module or at least two battery modules, the battery modules are disposed in parallel along a length direction or a width direction of the battery pack, and each battery module is secured to the case.
  • This application further provides an apparatus using a battery cell, and the apparatus includes the foregoing battery module or the foregoing battery pack.
  • the battery module provided in this application includes a plurality of battery cells, an end plate, and a cell management unit.
  • the end plate includes a first end sub-plate and a second end sub-plate that are disposed along the length direction of the battery module.
  • the second end sub-plate is disposed close to the battery cells, and a buffer spacing is formed between the first end sub-plate and the second end sub-plate.
  • the cell management unit is disposed on the side of the first end sub-plate facing away from the second end sub-plate.
  • the battery cells generate an expansion force. Because the second end sub-plate is disposed close to the battery cells, the second end sub-plate is directly affected by the expansion force.
  • the expansion force generated by the battery cells gradually increases.
  • the second end sub-plate deforms toward the first end sub-plate, that is, the second end sub-plate causes the buffer spacing to become smaller.
  • the buffer spacing is present between the first end sub-plate and the second end sub-plate, the first end sub-plate can be effectively protected from being affected by deformation of the second end sub-plate when the second end sub-plate becomes deformed.
  • the buffer spacing disposed between the first end sub-plate and the second end sub-plate can effectively avoid deformation of the first end sub-plate under the expansion force generated by the battery cells, thereby protecting the cell management unit disposed on the side of the first end sub-plate facing away from the second end sub-plate from a failure caused by the external force. This improves the life of the cell management unit and further improves the service life of the battery module.
  • a battery pack includes a case and a battery module 100 disposed in the case.
  • the case may be made of aluminum, aluminum alloy, or other metal materials.
  • the case has an accommodating cavity.
  • the case is a top-open case structure and includes a top cover.
  • a size of the top cover is equivalent to that of an opening at the top of the case, and the top cover may be secured over the opening by using fasteners such as bolts, so as to form the accommodating cavity.
  • a sealing member may further be disposed between the top cover and the case.
  • the accommodating cavity of the case in the battery pack can accommodate one or at least two battery modules 100.
  • the battery modules 100 may be disposed in parallel along a length direction of the battery pack, or disposed in parallel along a width direction of the battery pack, and each battery module 100 is secured to the case.
  • FIG. 1 is a schematic structural diagram of a battery module according to an embodiment of this application
  • FIG. 2 is a schematic exploded view of the battery module according to this embodiment of this application
  • FIG. 3 is a locally enlarged view of position A in FIG. 2 .
  • this embodiment of this application provides a battery module 100, including a plurality of battery cells 1, an end plate 3, a side plate 2, and a cell management unit 4.
  • the plurality of battery cells 1 are arranged sequentially and the end plate 3 includes a first end sub-plate 31 and a second end sub-plate 32.
  • the side plate 2 is connected to the end plate 3.
  • the first end sub-plate 31 and the second end sub-plate 32 are arranged along a length direction (X direction) of the battery module 100, and the second end sub-plate 32 is closer to battery cells 1 than the first end sub-plate 31.
  • a buffer spacing 35 is formed between the first end sub-plate 31 and the second end sub-plate 32, and the cell management unit 4 is disposed on a side of the first end sub-plate 31 facing away from the second end sub-plate 32.
  • the battery module 100 provided in this embodiment of this application includes the plurality of battery cells 1, the end plate 3, and the cell management unit 4.
  • the end plate 3 includes the first end sub-plate 31 and the second end sub-plate 32 that are disposed along the length direction of the battery module 100.
  • the second end sub-plate 32 is disposed close to the battery cells 1, and the buffer spacing 35 is formed between the first end sub-plate 31 and the second end sub-plate 32.
  • the cell management unit 4 is disposed on the side of the first end sub-plate 31 facing away from the second end sub-plate 32.
  • the battery cells 1 generate an expansion force.
  • the second end sub-plate 32 is disposed close to the battery cells 1, the second end sub-plate 32 is directly affected by the expansion force. As a quantity of charging and discharging times of the battery cells 1 increases, the expansion force generated by the battery cells 1 gradually increases.
  • the second end sub-plate 32 deforms toward the first end sub-plate 31, that is, the second end sub-plate 32 causes the buffer spacing 35 to become smaller.
  • the buffer spacing 35 is present between the first end sub-plate 31 and the second end sub-plate 32, the first end sub-plate 31 can be effectively protected from being affected by deformation of the second end sub-plate 32 when the second end sub-plate 32 becomes deformed.
  • the buffer spacing 35 disposed between the first end sub-plate 31 and the second end sub-plate 32 can effectively avoid deformation of the first end sub-plate 31 under the effect of the expansion force generated by the battery cells 1, thereby protecting the cell management unit 4 disposed on the side of the first end sub-plate 31 facing away from the second end sub-plate 32 from a failure caused by the external force. This improves the life of the cell management unit 4 and further improves the service life of the battery module 100.
  • FIG. 4 is a schematic structural diagram of an end plate in a battery module according to an embodiment of this application
  • FIG. 5 is a schematic structural diagram of a first end sub-plate in the battery module according to this embodiment of this application
  • FIG. 6 is a schematic structural diagram of a metal plate in the battery module according to this embodiment of this application
  • FIG. 7 is a schematic structural diagram of an insulation fastener in the battery module according to this embodiment of this application.
  • the first end sub-plate 31 includes a metal plate 311 and an insulation fastener 312.
  • the insulation fastener 312 includes a first body 312a, the metal plate 311 is inserted into the first body 312a, and the cell management unit 4 is secured to a side of the first body 312a facing away from the second end sub-plate 32.
  • the first end sub-plate 31 includes the metal plate 311 used for increasing strength of the first end sub-plate 31. Because the cell management unit 4 is disposed on one side of the first end sub-plate 31 facing away from the second end sub-plate 32, in order to insulate the cell management unit 4 from the metal plate 311, the insulation fastener 312 is disposed on the outside of the metal plate 311, thereby effectively isolating the metal plate 311 from the cell management unit 4. This avoids a short circuit of the cell management unit 4 and improves safety of the battery module 100.
  • the insulation fastener 312 includes the first body 312a, and the metal plate 311 is inserted into the first body 312a, so as to implement fitting of the insulation fastener 312 and the metal plate 311.
  • Insertion of the metal plate 311 into the first body 312a includes full insertion and partial exposure.
  • a through hole is provided on a side, extending along a width direction (Y direction) of the battery module 100, of the first body 312a, that is, the metal plate 311 is partially exposed from the first body 312a. Because an exposed area is very small, an insulation effect of the first body 312a is not affected.
  • the through hole is provided, fluidity of an injection molding material can be improved and an injection molding speed be increased during injection molding of the first body 312a. After injection molding, the through hole helps heat dissipation of the injection molding material, and accelerates solidification of the injection molding material, thereby improving fabrication efficiency of the insulation fastener 312.
  • disposition of the insulation fastener 312 facilitates disposition of a connection structure for connecting the first end sub-plate 31 to the cell management unit 4 on the insulation fastener 312, thereby simplifying connection between the cell management unit 4 and the first end sub-plate 31.
  • the insulation fastener 312 is formed by injection molding of a material that includes a plastic material. During fabrication of the first end sub-plate 31, the metal plate 311 is placed in an injection mold, and then a liquid injection material is injected into the injection mold. Finally, the injection material is cooled, and the injection material solidifies to form the insulation fastener 312 and also connect the metal plate 311 to the insulation fastener 312.
  • FIG. 8 is a locally enlarged view of position B in FIG. 2 ;
  • FIG. 9 is a locally enlarged view of position C in FIG. 2 ;
  • FIG. 10 is a locally enlarged view of position D in FIG. 2 ;
  • FIG. 11 is a locally enlarged view of position E in FIG. 2 .
  • the cell management unit 4 is connected to the first body 312a.
  • a first slot 41 is provided in one of the cell management unit 4 and the first body 312a, a second buckle 313 is disposed on the other, a protrusion 42 is disposed in the first slot 41, and the protrusion 42 is fitted to the second buckle 313; and/or, a first buckle 43 is disposed in one of the cell management unit 4 and the first body 312a, a second slot 314 is provided on the other, and the first buckle 43 is fitted to the second slot 314.
  • the first body 312a With the slot and the buckle disposed on the first body 312a and the cell management unit 4, the first body 312a is connected to the cell management unit 4.
  • specific disposition of the slot and the buckle on the cell management unit 4 or the first body 312a is not limited provided that the first body 312a can be connected to the cell management unit 4.
  • the first slot 41 is provided on a side, facing a top surface of the battery module 100, of the cell management unit 4, and the first buckle 43 is disposed on a side of the cell management unit 4 facing away from the top surface of the battery module 100.
  • the first end sub-plate 31 further includes an extension 316, the extension 316 is connected to a side of the first body 312a facing towards the cell management unit 4, and the extension 316 extends in a length direction (X direction) of the battery module 100.
  • the second slot 314 is formed in the extension 316, and the first buckle 43 is formed in the cell management unit 4.
  • the first slot 41 is provided on the side of the cell management unit 4 facing towards the top surface of the battery module 100, the protrusion 42 is formed in the first slot 41, and the second buckle 313 is disposed at a position, corresponding to the first slot 41, of the first body 312a.
  • the second buckle 313 When the second buckle 313 is fitted to the first slot 41, the second buckle 313 extends into the first slot 41 to engage with the protrusion 42, so as to limit relative displacement of the first body 312a and the cell management unit 4 along the length direction (X direction) of the battery module 100.
  • the first buckle 43 is formed on the side of the cell management unit 4 facing away from the top surface of the battery module 100, and the second slot 314 is formed in the extension 316.
  • the first buckle 43 is inserted into the second slot 314, so as to limit relative displacement of the cell management unit 4 and the first body 312a along a height direction (Z direction) of the battery module 100, thereby implementing installation and position limiting of the cell management unit 4, and improving assembly stability of the end plate 3 and the cell management unit 4.
  • the first end sub-plate 31 further includes a limiting plate 315.
  • the limiting plate 315 is connected to a side of the first body 312a facing towards the cell management unit 4, so as to limit displacement of the cell management unit 4 along the width direction of the battery module 100.
  • the limiting plate 315 is disposed on the side of the first body 312a facing towards the cell management unit 4.
  • Two limiting plates 315 are arranged in the width direction (Y direction) of the battery module 100, and are disposed on both sides of the cell management unit 4. Ends of the two limiting plates 315 facing towards the extension 316 are connected to two ends of the extension 316.
  • the two limiting plates 315 and the extension 316 enclose an installation area of the cell management unit 4, which can effectively prevent the cell management unit 4 from being assembled to an incorrect position and improve assembly efficiency of the cell management unit 4 and the end plate 3.
  • the limiting plate 315 can limit relative displacement of the cell management unit 4 and the end plate 3 along the width direction of the battery module 100, thereby avoiding large relative displacement between the cell management unit 4 and the end plate 3, and improving connection stability of the cell management unit 4 and the end plate 3.
  • FIG. 12 is a schematic structural diagram of a second end sub-plate in a battery module according to an embodiment of this application. As shown in FIG. 12 , in an implementation of the foregoing second end sub-plate 32, a reinforcing rib 321 is formed on one or both sides of the second end sub-plate 32 along a length direction (X direction) of the battery module 100.
  • the reinforcing rib 321 is formed on a surface of the second end sub-plate 32, which can effectively increase strength of the second end sub-plate 32.
  • an amount of deformation of the second end sub-plate 32 can be reduced because the second end sub-plate 32 has relatively large strength, that is, larger strength of the second end sub-plate 32 indicates a smaller size of a buffer spacing 35 formed between the second end sub-plate 32 and a first end sub-plate 31, thereby reducing a thickness of the end plate 3 and a volume of the battery module 100.
  • FIG. 13 is a schematic structural diagram of a third end sub-plate in a battery module according to an embodiment of this application.
  • the end plate 3 further includes a third end sub-plate 33.
  • the third end sub-plate 33 is connected to a side of a second end sub-plate 32 facing away from a first end sub-plate 31.
  • the battery cells 1 During charging of battery cells 1, the battery cells 1 generate an expansion force, and the expansion force directly acts on the end plate 3.
  • the third end sub-plate 33 is disposed on the side of the second end sub-plate 32 facing away from the first end sub-plate 31, and the third end sub-plate 33 is a flat plate structure.
  • the flat plate structure is not in an absolute flat plate state provided that a main surface close to the battery cells is relatively flat.
  • a groove structure provided on the surface of the third end sub-plate 33 to accommodate adhesive and cushion may also be considered as a flat plate structure.
  • the expansion force generated by the battery cells 1 directly acts on the third end sub-plate 33.
  • the third end sub-plate 33 is a flat plate structure, when the expansion force acts on the third end sub-plate 33, the third end sub-plate 33 is not prone to produce stress concentration, and uniformly applies the received expansion force to the second end sub-plate 32, so that the second end sub-plate 32 is neither prone to produce stress concentration, thereby effectively improving the service life of the second end sub-plate 32, that is, improving the service life of the cell management unit 4 and the battery module 100.
  • connection members are disposed at both ends of the first end sub-plate 31, the second end sub-plate 32, and the third end sub-plate 33 along a width direction (Y direction) of the battery module 100.
  • first connection members 311a are disposed on both sides of the metal plate 311 along the width direction of the battery module 100.
  • the second end sub-plate 32 includes a second body 322 and second connection members 323 along the width direction of the battery module 100, and the second connection members 323 are connected to both sides of the second body 322 along the width direction of the battery module 100.
  • the third end sub-plate 33 includes a third body 331 and third connection members 332 along the width direction of the battery module 100, and the third connection members 332 are connected to both sides of the third body 331 along the width direction of the battery module 100.
  • the first connection member 311a, the second connection member 323, and the third connection member 332 are connected.
  • the first connection members 311a are disposed on both sides of the metal plate 311 in the first end sub-plate 31; the second connection members 323 are disposed on both sides of the second body 322 in the second end sub-plate 32; the third connection members 332 are disposed on both sides of the third body 331 in the third end sub-plate 33.
  • the first connection member 311a, the second connection member 323, and the third connection member 332 are connected to ensure stability of connection between the first end sub-plate 31, the second end sub-plate 32, and the third end sub-plate 33.
  • disposition of the first connection member 311a, the second connection member 323, and the third connection member 332 can avoid damages to structures formed on surfaces of the first body 312a, the second body 322, and the third body 331 during connection of the first end sub-plate 31, the second end sub-plate 32, and the third end sub-plate 33, thereby ensuring structural reliability of the end plate 3.
  • FIG. 14 is a schematic structural top view of an end plate of a battery module according to an embodiment of this application.
  • the foregoing end plate 3 further includes a sleeve 34, and a center line of the sleeve 34 extends along a height direction (Z) of a battery module 100.
  • a first connection member 311a, a second connection member 323, and a third connection member 332 are all connected to an outer wall of the sleeve 34.
  • the end plate 3 further includes the sleeve 34.
  • the first connection member 311a, the second connection member 323, and the third connection member 332 are connected to the outer wall of the sleeve.
  • the sleeve 34 is disposed on both sides of the second end sub-plate 32 along a width direction (Y direction) of the battery module 100.
  • the first connection member 311a, the second connection member 323, and the third connection member 332 are welded to the sleeve 34, to form a stable structure for the end plate 3.
  • an insulation fastener 312 includes a first lifting member 312b, and the first lifting member 312b is disposed at the top of a first body 312a along a height direction of the battery module 100.
  • the second end sub-plate 32 includes a second lifting member 324, and the second lifting member 324 is disposed on the top of the second end sub-plate 32 along the height direction of the battery module 100.
  • the third end sub-plate 33 includes a third lifting member 333, and the third lifting member 333 is disposed at the top of the third end sub-plate 33 along the height direction of the battery module 100.
  • the first lifting member 312b, the second lifting member 324, and the third lifting member 333 are connected along the height direction (Z direction) of the battery module 100, so as to move the end plate 3 and the battery module 100.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)

Claims (13)

  1. Module de batterie, comprenant :
    une pluralité de cellules de batterie (1) agencées séquentiellement ;
    une plaque d'extrémité (3), dans lequel la plaque d'extrémité (3) comprend une première sous-plaque d'extrémité (31) et une deuxième sous-plaque d'extrémité (32) ;
    la première sous-plaque d'extrémité (31) et la deuxième sous-plaque d'extrémité (32) sont agencées dans une direction de longueur (X) du module de batterie (100), la deuxième sous-plaque d'extrémité (32) est plus près des cellules de batterie (1) que la première sous-plaque d'extrémité (31), et un espacement tampon (35) est formé entre la première sous-plaque d'extrémité (31) et la deuxième sous-plaque d'extrémité (32) ; et
    une unité de gestion de cellule (4), dans lequel l'unité de gestion de cellule (4) est disposée sur un côté de la première sous-plaque d'extrémité (31) tourné à l'opposé de la deuxième sous-plaque d'extrémité (32) ; et
    dans lequel la première sous-plaque d'extrémité (31) comprend une plaque de métal (311) et un dispositif de fixation isolant (312) ;
    le dispositif de fixation isolant (312) comprend un premier corps (312a) ;
    la plaque de métal (311) est insérée dans le premier corps (312a) ; et
    l'unité de gestion de cellule (4) est fixée à un côté du premier corps (312a) tourné à l'opposé de la deuxième sous-plaque d'extrémité (32).
  2. Module de batterie selon la revendication 1, dans lequel une première fente (41) est prévue dans un de l'unité de gestion de cellule (4) et du premier corps (312a), et une seconde attache (313) est disposée sur l'autre ; et
    une saillie (42) est disposée dans la première fente (41), et la saillie (42) est ajustée sur la seconde attache (313) ; et/ou
    une première attache (43) est disposée dans un de l'unité de gestion de cellule (4) et du premier corps (312a), et une seconde fente (314) est prévue sur l'autre ; et
    la première attache (43) est ajustée sur la seconde fente (314).
  3. Module de batterie selon la revendication 2, dans lequel la première sous-plaque d'extrémité (31) comprend en outre une extension (316) ;
    l'extension (316) est reliée à un côté du premier corps (312a) tourné vers l'unité de gestion de cellule (4), et l'extension (316) s'étend le long de la direction de longueur (X) du module de batterie (100) ;
    la seconde fente (314) est formée dans l'extension (316) ; et
    la première attache (43) est formée dans l'unité de gestion de cellule (4).
  4. Module de batterie selon la revendication 1, dans lequel la première sous-plaque d'extrémité (31) comprend en outre une plaque limitatrice (315) ; et
    la plaque limitatrice (315) est reliée à un côté du premier corps (312a) tourné vers l'unité de gestion de cellule (4), afin de limiter le déplacement de l'unité de gestion de cellule (4) le long d'une direction de largeur du module de batterie (100).
  5. Module de batterie selon l'une quelconque des revendications 1 à 4, dans lequel la plaque d'extrémité comprend en outre une troisième sous-plaque d'extrémité (33) ; et
    la troisième sous-plaque d'extrémité (33) est reliée à un côté de la deuxième sous-plaque d'extrémité (32) tourné à l'opposé de la première sous-plaque d'extrémité (31).
  6. Module de batterie selon la revendication 5, dans lequel des premiers éléments de liaison (311a) sont disposés sur les deux côtés de la plaque de métal (311) le long de la direction de largeur du module de batterie (100) ;
    la deuxième sous-plaque d'extrémité (32) comprend un deuxième corps (322) et des deuxièmes éléments de liaison (323) le long de la direction de largeur du module de batterie (100), et les deuxièmes éléments de liaison (323) sont reliés aux deux côtés du deuxième corps (322) le long de la direction de largeur du module de batterie (100) ;
    la troisième sous-plaque d'extrémité (33) comprend un troisième corps (331) et des troisièmes éléments de liaison (332) le long de la direction de largeur du module de batterie (100), et les troisièmes éléments de liaison (332) sont reliés aux deux côtés du troisième corps (331) le long de la direction de largeur du module de batterie (100) ; et
    le premier élément de liaison (311a), le deuxième élément de liaison (323), et le troisième élément de liaison (332) sont reliés.
  7. Module de batterie selon la revendication 6, comprenant en outre un manchon (34), dans lequel une ligne centrale du manchon (34) s'étend le long d'une direction de hauteur (Z) du module de batterie (100) ; et
    le premier élément de liaison (311a), le deuxième élément de liaison (323), et le troisième élément de liaison (332) sont tous reliés à une paroi extérieure du manchon (34).
  8. Module de batterie selon la revendication 5, dans lequel le dispositif de fixation isolant (312) comprend un premier élément de levage (312b), et le premier élément de levage (312b) est disposé en haut du premier corps (312a) le long d'une direction de hauteur du module de batterie (100) ;
    la deuxième sous-plaque d'extrémité (32) comprend un deuxième élément de levage (324), et le deuxième élément de levage (324) est disposé en haut de la deuxième sous-plaque d'extrémité (32) le long de la direction de hauteur du module de batterie (100) ;
    la troisième sous-plaque d'extrémité (33) comprend un troisième élément de levage (333), et le troisième élément de levage (333) est disposé en haut de la troisième sous-plaque d'extrémité (33) le long de la direction de hauteur du module de batterie (100) ; et
    après que le premier élément de levage (312b), le deuxième élément de levage (324), et le troisième élément de levage (333) sont reliés, un élément de levage (5) utilisé pour lever le module de batterie (100) est formé.
  9. Module de batterie selon l'une quelconque des revendications 1 à 4, dans lequel une nervure de renforcement (321) est formée sur un ou les deux côtés de la deuxième sous-plaque d'extrémité (32) le long de la direction de longueur du module de batterie (100).
  10. Module de batterie selon la revendication 5, dans lequel la troisième sous-plaque d'extrémité (33) est généralement une structure de plaque plate, et une structure de rainure pour un adhésif ou amortisseur est prévue sur une surface de la troisième sous-plaque d'extrémité (33).
  11. Bloc batterie, dans lequel le bloc batterie comprend un boîtier et le module de batterie disposé dans le boîtier selon l'une quelconque des revendications 1 à 10.
  12. Bloc batterie selon la revendication 11, dans lequel le boîtier a une cavité de logement, la cavité de logement loge un module de batterie ou au moins deux modules de batterie, les modules de batterie sont disposés en parallèle le long d'une direction de longueur ou d'une direction de largeur du bloc batterie, et chaque module de batterie est fixé au boîtier.
  13. Appareil utilisant une cellule de batterie, dans lequel l'appareil comprend le module de batterie selon l'une quelconque des revendications 1 à 10 ou le bloc batterie selon l'une quelconque des revendications 11 à 12.
EP20811954.5A 2019-08-20 2020-07-17 Module de batterie, bloc-batterie et appareil utilisant un élément de batterie Active EP3813147B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910770671.9A CN112310540A (zh) 2019-08-20 2019-08-20 电池模组
PCT/CN2020/102833 WO2021031762A1 (fr) 2019-08-20 2020-07-17 Module de batterie, bloc-batterie et appareil utilisant un élément de batterie

Publications (3)

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EP3813147A1 EP3813147A1 (fr) 2021-04-28
EP3813147A4 EP3813147A4 (fr) 2021-10-20
EP3813147B1 true EP3813147B1 (fr) 2023-02-15

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US (1) US11476533B2 (fr)
EP (1) EP3813147B1 (fr)
CN (1) CN112310540A (fr)
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WO (1) WO2021031762A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN114388961B (zh) * 2022-01-07 2022-10-14 武汉亿纬储能有限公司 一种电池模组及电池
CN115189082B (zh) * 2022-09-13 2022-12-27 江苏时代新能源科技有限公司 电池模块、电池及用电装置
WO2024098248A1 (fr) * 2022-11-08 2024-05-16 厦门新能达科技有限公司 Appareil électrochimique et dispositif électrique

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US8293392B2 (en) * 2009-03-26 2012-10-23 Sanyo Energy (Usa) Corporation Battery holder for a battery array, and battery array
JP2011175743A (ja) * 2010-02-23 2011-09-08 Sanyo Electric Co Ltd 電源装置及びこれを備える車両
WO2012042913A1 (fr) * 2010-09-30 2012-04-05 三洋電機株式会社 Module de batterie, système de batterie comprenant celui-ci, véhicule électrique, corps mobile, dispositif de stockage d'énergie électrique, dispositif d'alimentation en énergie électrique et dispositif électrique
US10263300B2 (en) * 2012-02-08 2019-04-16 A123 Systems Llc Battery pack including fluid resistant over mold
CN203760534U (zh) * 2013-11-20 2014-08-06 北京科易动力科技有限公司 一种电池模块
CN106299187A (zh) * 2016-09-23 2017-01-04 宁德时代新能源科技股份有限公司 电池模组
CN206250253U (zh) * 2016-12-27 2017-06-13 宁德时代新能源科技股份有限公司 电池模组端板及电池模组
CN207441797U (zh) * 2017-10-26 2018-06-01 宁德时代新能源科技股份有限公司 一种电池模组端板及电池模组
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CN109994666B (zh) * 2017-12-29 2020-11-06 宁德时代新能源科技股份有限公司 复合端板以及电池模组
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CN208111517U (zh) * 2018-03-30 2018-11-16 微宏动力系统（湖州）有限公司 一种电池模组端板组件及电池模组
CN209016124U (zh) * 2018-09-30 2019-06-21 宁德时代新能源科技股份有限公司 一种电池模组

Also Published As

Publication number Publication date
US20210091347A1 (en) 2021-03-25
US11476533B2 (en) 2022-10-18
EP3813147A1 (fr) 2021-04-28
WO2021031762A1 (fr) 2021-02-25
CN112310540A (zh) 2021-02-02
HUE061588T2 (hu) 2023-07-28
EP3813147A4 (fr) 2021-10-20

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